54491903 has 2 divisors, whose sum is σ = 54491904. Its totient is φ = 54491902.

The previous prime is 54491873. The next prime is 54491917. The reversal of 54491903 is 30919445.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54491903 is a prime.

It is a super-2 number, since 2×54491903² = 5938734985122818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54491923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27245951 + 27245952.

It is an arithmetic number, because the mean of its divisors is an integer number (27245952).

Almost surely, 2^54491903 is an apocalyptic number.

54491903 is a deficient number, since it is larger than the sum of its proper divisors (1).

54491903 is an equidigital number, since it uses as much as digits as its factorization.

54491903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 54491903 is about 7381.8631117083. The cubic root of 54491903 is about 379.1205493214.

The spelling of 54491903 in words is "fifty-four million, four hundred ninety-one thousand, nine hundred three".